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Abstract

A thermoplastic dielectric film coated onto a metal foil backing is used to laminate and isolate layered electrical circuits.

Country

United States

Language

English (United States)

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Enhanced Characteristics in Laminated Layers

A thermoplastic dielectric film coated onto a metal foil backing is used to
laminate and isolate layered electrical circuits.

Improved laminates with fewer air voids and short circuits are obtained when
the dielectric/metal coating is provided with a roughened polymer surface prior to
lamination. A controlled roughened surface can be satisfactorily obtained by
impinging air on the polymer surface in the process of coating the polymer onto
the metal foil backing.